Method for determining mistake in air supply system of e.g. diesel engine of motor system, involves determining first error in air supply system when actual rotational speed of charging device is greater than target rotation speed of device

摘要

The method involves determining an actual rotation speed of a charging device (6). A target speed of the charging device is determined based on a predetermined compressor characteristic diagram. A first error in an air supply system (3) is determined when the actual rotational speed of the charging device is greater than the target rotation speed of the charging device. A leakage in a high pressure portion of the air supply system is determined as a first mistake. A second mistake in an active exhaust gas recirculation is recognized. Independent claims are also included for the following: (1) a device for determining mistake in an air supply system of a supercharged combustion engine (2) a motor system (3) a computer program including a set of instructions to perform a method for determining mistake in an air supply system of a supercharged combustion engine (4) an electronic memory medium comprising a set of instructions to perform a method for determining mistake in an air supply system of a supercharged combustion engine (5) an electronic control device.